Rolf Heuer, director of the European Organization for Nuclear Research (CERN), answers questions July 4, 2012, during a scientific seminar in Meyrin, Switzerland, to deliver the latest update in the search for the Higgs boson. (Associated Press/Keystone)

Rolf Heuer, director of the European Organization for Nuclear Research (CERN), answers questions July 4, 2012, during a scientific seminar in Meyrin, Switzerland, to deliver the latest update in the search for the Higgs boson. (Associated Press/Keystone)